2.4.1 Minimizing the Load for Device/PLC Communication (Direct
Access)
The display unit makes a request
to the device/PLC. The device/PLC then responds to the request from
the display unit.
The communication format that minimizes the program load on the
device/PLC is called "Direct Access".
Setup Process
In the [Device/PLC] page, select the
device/PLC to connect.
Usable
Addresses
For the display unit to get the necessary
display data from the device/PLC, set an address that can reference
data used for Parts and script features. There are two types of
addresses that you can reference.
The display unit can reference the device/PLC
data. For usable addresses and device codes, refer to the "GP-Pro
EX Device/PLC Connection Manual".
Select the device/PLC name (for example,
"PLC1") that will communicate with the display unit, and input an
address (for example, "D00000").
For example, an Input Address screen on a Word Switch.
These are temporary storage locations for
saving data such as the values operated on or controlled in the
display unit. When referencing data, select [#INTERNAL] as the
[Device/PLC], and input the associated address. [#INTERNAL] refers
to the display unit's internal device.
For example, an Input Address screen on a
Word Switch.
The display unit's internal device
[#INTERNAL], has two structured areas. The [LS] area and the [USR]
are shown below.
This contains the user area and an area for
operating the display unit.
A.1.1 LS
Area (Direct Access Method Area)
The data storage order changes depending on
the [Text Data Mode] property in the [System Settings] window's
[Device/PLC] page.
7.8.1 System Settings
[Device/PLC] Settings Guide
You can also change the data storage order by
defining the text data mode using address LS9130.
Chapter 21 Using Scripts
(Programming without Parts)
You may use all areas as you like, up to
30000 Words.
The text data storage order is fixed to L/H, no matter what the
[Text Data Mode] property is set to in the [System Settings]
window's [Device/PLC] page.
-
Data stored in the display unit's internal
devices is deleted when the display unit is turned off or enters
offline mode, such as when transferring. to retain internal device
data, you can copy the User Area's data to backup memory
(SRAM).
5.3.4.3
Display Unit [Mode] - Backup Internal Device
Device Codes and Address Ranges of Display
Unit Internal Devices (LS/USR)
Device
|
Device Code
|
Address Range
|
LS
|
0x0000
|
0 to 9999
|
USR
|
0x0001
|
0 to 29999
|
|